Machine for reducing wire.



H. SLEEPER. MACHINE FOR REDUCING WERE AIPPLICATION FILED MAY8,1909.

Patunted May 4, 1915.

LBZQQQQ T 90 F A E j i 291. I a I .7 17 "19 18 24*; i 14 15 E 15 l 5 1 E 2 In aj jl q E 21 4 ,JL 1 1 '22 -|L 7.5 the three rotatinu 30 as hereinafter described z'll'lt OF WORCESTER, MASSACHUSETTS.

-MACHINE FOR REDUCING WIRE. i

Specification of Letters Patent.

Application filed May 8, 1809.

To (:25 inf/lum- 2'2. may conce it.

Be it lfIlOW'i that I. FRANK H. SLEEPER, a citizen of the Dominion of Canada, residing at lVorcester, in the county of lVOlCQStEI and Commonwealth of Irlassachusetts, have invented a new and useful Improvement in Machines for Reducing ll' ire, of which the folio ing is a suociiicarion, accompanied by drawings, forming a part of Lao same, in

Figure 1 reuresents a side elevation of a machine for reducil g \vire embodying my invention. 2 is a plan View of the same. jg. 3'is a vertical central sectional view of sivaging heads. Fig. l is an end view one of the swagingheads, and Figs. 5, l3 and T A detached views of dies taken in order from the several sir aging heads'l-l, and 16, and showing the variation in the face of the dies.

similar reference letters and figures refer to similar parts in the dillercnt views.

The object of my invention to provide means for the continuous reduction of Wire by a swag'ing process, which obviates some of the disadvantages now attending the reduction of Wire by drawing it successively through dies. and my invention consists in the construction and arrangement of arts l pointed out in t 1e annexed claims.

referring to Figs. 1 and 2 ot the draw ings, 1 denotes a table or bench upon which he operative parts of the mechanism are 5 mounted. 2 a countcrshaft from which the r are driven, and 3 a supporting stand upon which is mounted a reel 4- permitted to turn freely. and carrying a coil of Wire 5 whose diainetcr is to be reduced.

(3 is a stand carrying a pair of feed rolls T. driven through a Worm and worm gear and pulley 9 from a pulley 10 on the countershaft through'a helt connection 11. The rotation of the feed rolls 7 imy arts a for Ward movement to a Wire rod 12 in the direction of the arms 13.

Supported uoon the table 1 and concentrically With the line of feed of the Wire rod 12 are a multiplicity of swaging heads. in the present instance hree in number; ll. 15 md lfi. The svmgiug heads ii and 16 are lrivcn by the open bolts 17 and 18 from the :ountershaft 2, and the swagiug head 1 lriven by a cross belt 19 from the counteri ones of the three haft, so that successive eads revolve in opposite directions. By

- cries of the Patented May it, Zihiii Serial No. 494,763.

rotating each pair of dies in theopposite direction from the preceding pair, spiral rid cs on the surface of the Wire which may be formed by one pair of dies will he obliten atcd by the succeeding pair. Mounted upon a stand 90 behind the last swaging head 18 is a rotating disk 21, driven through beveled gears 22 and a pulley 2-3 from the counter-shaft 2 through a belt connection 24. loosely supported upon the rotating disk 21 is a base 25 of'a reel 26, Which is rotated by the frictional contact, between the rota? ing disk 21 and the reel base 25 reduced Wire isdelivered froi the swaging head 16, it is taken up by the revolving reel 26*- as long as the strain upon the Wire is less than the friction between the case or the reel and the revolving disk 21. il/ hen this friction becomes less than the strain upon e Wire, the disk 21 revolves while the reel stands still.

Each of the swaging heads with reducing dies, in the two in number, and 26, carried in diaiuetrical Ways in a rotating head 2?. The dies 25 and 26 are backed by die blocks 28 which, as the head rotates. are carried into contact with a series of rolls 29 journaled in a circular frame 30, with the outer periphrolls bearingagainst a steel hushmg 31 which is held in stationary stand 232. The rotating heads are carried by hollow shafts :3 3 'ournaled in the stands and provided with belt pulleys 3;. The faces of the respective pairs of dies in each of the gin; heads ll. 15 and 16 vary in form, as shouu in se tional iew in Figs. 5, 6 and 7.

The lit m tho first sivaging head 1% are provided with curved 5, which contact at the r central s ions with the wire rod 1hr a limited area. The dies and 2 of the second sua ging head 15 are provided at th ll-utral sections with a flatteucd space L ad; lu to contact with a greater length of the l' .1 than the dies in the first s raging hem c'lulcthc dies in the last swaying head it are tattooed throughout greater extent of their cent. l sections, as shown at 37. so as to contact with a grea or length of Wire than the dies in the sWz-ging head lu 5. 6 and T I have shown one of the dies from each of the heads ll. 15 and 16 rcsjuwtivcly detached. and showing the clon cation of the contacting surface with the Wire by each successive pair is provided present nstance of dies, the

, center of the curved face 1 of each succeeding pair of marks,

35 showing the amount of contact of the first pair of dies with the rod as it passes between them. The flattened surface 36 in Fig. 6 shows the increased contacting surface of the second pair of dies, and the flattened surface 37 in Fig. 7 shows a still greater contacting surface between the dies of the third head and the wire.-

The increase in the contacting surfaces of the successive pairs of dies is for the purpose of compensating for the increased longitudinal movement of the wire as it passes through each of the swaging heads, due to the elongation of the wire. As the wire increases in length with eachreduction in diameter, and as the feeding of the wire to the first set of compressing dies is uniform, it follows, the speed of each reduced section will be increased, it being equal to the initial speed of the wire plus its elongation due to compression. If the contacting surfaces of. the successive pairs of dies were of the same length, each elongated section of wire would pass between each pair of dies more rapidly. tact wlth each successive pair of dies for the same period of time, I increase the length dies to correspond with the a z nount The successive'pairs of dies portioned relatively to the increased feed movement of-the Wire, in order that the swaged wire is it leaves the dies may present a perfectly smooth cylindrical surface without the formation of spiral ridges or which w-ouldbe liable to occur provided the successive compressions caused by the dies did not overlap each other. The amount of reduction also made by each sucof each elongation.

cessive pair of dies is proportioned inversely to e increased speed of the wire as it is for ed through the dies.

The amount of reduction effected by each of the an aging mechanisms 15 and 16 is, therefore, less thanthat produced by the swaging mechanism 14:, and the compression produced by the swaging mechanism 16 is less than that produced by the swaging mechanism 15. of compression made by each successive pair of dies is for the purpose of equalizing the work thrown upon each of the swaging mech anisms. contacting surfaces of successive pairs of dies requires, m order that the work upon each pair should be equalized, that the amount of reduction 'of the wire going through the dies with the longer contacting surfaces should be reduced, and this is accomplished by reducing'the amount of comthe dies in this swaging In orderthat the wire should conare, therefore, pro

The reduction in the amount The increased length of the pression inversely to the elongation of the wire. For example, if the wire is elongated to twice itsoriginal length bythe swaging head 14, the feed movement of the wire into the swaging mechanism 15 will be twice as fast as that into the swaging mechanism 14:, and the amount of compression effected by echanism 15 is consequently arranged to be half that caused by the dies in the swaging mechanism 14-, and so on anisms 2. In a. machine for the continuous reduction of a wire, the combination of a series of rotating swaging heads, each having intermittently actuated dies fpi compressingthe wire and arranged in axial'alinement, means for feeding the wire at a gniform speed to the first of said swaging he with the remaining swaging heads arranged to receive the wire direct from the" next preceding swaging head, and a frictionally rotated tion of a wire, comprising a series of rotating swaging mechanisms of-"the class described, means for feeding the wire at a continuous uniform speed to the first of said swaging mechanisms,

ing each of said swaging mechanisms in the ing mechanism.

4. In a. machine for the continuous reduction of a wire, a. seriw of rotating swaging mechanisms of the class described placed in axial alinement, with each succeeding swaging. mechanism, arranged to receive the wire direct from the next preceding swaging PENELOPE CoMBnRnAcH,

Rnrn s B. FOWLER.

and means for rotat- 0 u opposite direction from the precedmgswag- I throughout the series of swaging mechanisms,

carriedby said head,

and frictionally rotated i take-up mechanism for receiving the wire from the last of said swaging heads.

3. In a machine for the continuous reduc- 1001' Witnesses: 

